Stapling-machine



E. H. MICHENER. STAPLING MACHINE. APPLICATION FILED NOV- I I919.

Patented. Dec. 28, 1920.

5 SHEETS-SHEET I.

A TTORNEY E. H. MICHIENER;

STAPLING MACHINE.

APPLICATION FILED NOV. I. l9l9.

136M344 Patehted Dec. 28,1921.

5 SHEETS-SHEET 2.

WITNESS a] I BY m v ATTORNEY E. H. MICHENER.

STAPLING MACHINE.

APPLICATION FILED NOV. I

Patented Dec. 28, 1929.

5 SHEETSSHEET 3.

WI TNES$ A TTORIVEY E. H. MiCHENER. STAPLING MACHINE.

APPLICATlON FILED NOV. 1, 19x9.

hm h m. 94 ii T H 8H 2% 58 CT DH 7 S d5 m 1% a P A A1 m 9 n0 6 00 3 1iINVENTOR WITNESS ATTORNEY E. H. MICHENER.

STAPLING MACHINE.

APPLICATION FILED NOV. 1. 19:9

LSfiSfiMB Patented Dec. 28, 1920.

5 SH EETSSHEET 5.

INVENTOR WITNESS 377" 3v mg/vim 6i ATTORNzY WWW ELWOOD H. MICHENER, 0FYVOODLYNNE. NEIT JERSEY, ASSIGNOR T0 ACME STAPLE COMPANY, OF CAMDEN,N'E'W JERSEY, A CORPORATION OF NEW JERSEY.

STAPLING-MACHINE.

Application filed November 1, 1919.

To all whom it may concern:

Be it known that I, ELwooD H. M1011- ENER, a citizen of the UnitedStates, residing at 1V oodlynne, in the county of Camden, State of NewJersey, have invented certain new and useful Improvements in Stapling-Machines, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification.

T his invention relates to improvements in staple setting machineswherein are employed a staple setting anvil, a member movable toward andfrom the anvil and provided with staple guiding means and a stapledriver adapted to cooperate with the staple guiding means and the anvilto set a staple in work placed upon the anvil.

An object of the invention is to provide a novel and advantageous meansfor con trolling and actuating the staple driver under a pressure whichwill yield during the staple setting operation to compensate fordifferent thicknesses of work placed upon the anvil; and which may beadjusted to provide different degrees of light yielding pressure forline or thin or delicate work and different degrees of heavy yieldingpressure for thick or coarse work to compensate for slight differencesin thicknesses in work being stapled by staples having prongs of uniformlength, and to provide the desired different yielding aressures fordifferent staples having prongs of varying lengths for work of greaterdifferences in thickness. Another object of the invention is to providea novel arrangement of parts which will prevent more than one staple ata time from being presented from the staple magazine to the stapledriver between it and the anvil; and a further object of the inventionis to provide a novel and advantageous means for adjustably supportingthe staple clenching anvil.

With the above and related objects in view the invention consists in thenovel construction, combination and arrangement of parts hereinafterdescribed and claimed.

In the accompanying drawings illustrating my invention,

Figure 1 is a. side view of a stapling machine embodying my invention.

Specification of Letters Patent.

Patented Dec. 28, 192th Serial No. 335,042.

Fig. 2 is a top view thereof.

F 3 is a front view thereof.

Fig. a is a vertical section, on line 1% of Fig. 3, omitting the drivingpulley.

Fig. 5 is a vertical section through the driving mechanism, on line 55of Fig. 4:.

Fig. 6 is a side View of the driving member detached from the machine.

Fig. 7 is a View of one end of the driving member.

Fig. 8 is a view of the other end of the driving member.

Fig. 9 is a sectional detail showing a part of the driving member, apart of the driving pulley and the dog for connecting them.

Fig. 10 is a face view of the boss or hub of the driving pulley providedwith the notches to receive the pivoted dog of the driving member.

Fig. 11 is a vertical section through the forward end of the pivotedmember carrying the staple driver, on line 1l-11 of Fig. 3.

Fig. 12 is a detail in section of the staple setting anvil and a part ofits supporting bracket.

Referring to the drawings, the frame of the machine comprises a standard2 provided on its upper portion with a forwardly extending arm 3 and onits lower portion with base projections 6 adapted to be secured to asuitable table 7 for supporting the machine.

Pivoted at 8, to the standard 2 is a memher 9 which extends forwardlyfrom its pivot laterally adjacent to but spaced from the frame arm 3.The outer side of the member 9 is grooved forming a magazine 10 for thestaples, and the magazine 10 is provided with a longitudinally-extendingguiding rib 12 embraced by the row of staples 13 which is adapted to befed forwardly thereon toward a wall 1 1 which is opposite to and spacedfrom the forward end of the rib 12 a distance equal to the thickness ofa staple. The row of staples 13 is fed toward the wall 14 by a suitablefollower 15 which is slidably fitted to the magazine 10 and attached toone end of a spring 16 which extends around a pulley 17 and through anopening in the member 9 to a lug 18 on the opposite side of the memher 9to which the other end of the spring 16 is attached, the spring 16acting to move the follower 15 and row of staples 13 toward the wall 14.

The space between the wall 14 and the forward end of the staple guidingrib 12 forms part of a channel 19 which extends up and down transverselyto the rib 12 and through upwardly and downwardly extending projections20 and 21, respectively, on the forward end of the member 9. Theprojection 21 is located above a staple setting anvil 22 which iscarried by a bracket 23 secured to the forward end of the frame arm 3;and the member 9 is adapted to be moved on its pivot 8 to move thebottom of the projection 21 toward and from the anvil 22 to clamp thework to be stapled between the anvil 22 and the projection 21 during thestapling operation and to raise the projection 21 from the anvil 22 topermit the removal of the stapled work and the insertion of new work tobe stapled. When the pivoted member 9 is raised, its upward move ment islimited by a projection 24 thereon engaging an adjustable screw 25 whichis carried by a lug 26 on the standard 2. By adjusting the screw 25 theextent of the upward movement of the member 9 may be nicely regulated.

A staple driving plate 27 is fitted to slide in the channel 19 towardand from the anvil 22. The staple driver 27 is secured to and extendsdownwardly from a block 28 which is fitted to slide within theprojection 20, and the sides of the block 28 are pivotally connected tothe bifurcated end of the forward arm 29 of a lever 30 which embracesthe upwardly extending projection 20 of the pivoted member 9. The lever30 is fulcrumed, at 31, within the bifurcated upper end of a link 32whose lower end is pivoted, at 33, to the standard 2. The end ofrearward arm 34 of the lever 30 is bifurcated and embraces and ispivoted, at 50, to the forward portion of a lever 35 which is fulcrumedat 36 on the upper end of an arm 37 which is also embraced by the leverarm 34. The lower portion of the arm 37 surrounds and is fitted to aneccentric 38 forming part of a driving member 39 which is mounted toturn freely on a shaft 40 projecting fixedly from one side of thestandard 2. One end of the shaft 40 is inserted into a split boss 41 onthe standard and firmly clamped therein by a screw 42 which is arrangedto draw the sides of the split boss 42 together. The lever 35 has an arm43 which extends rearwardly from its fulcrum point 36 and which has alongitudinal slot 44 formed therein. The bottom wall of the slot 44 hasspaced notches 45 for the reception of a pin 46 which extendstransversely through the slot 44. The outer ends of the pin 46 enter thesides of a split adjusting member 47 which embraces the bottom por tionof the lever arm 43, The adjusting member 47 is connected to the upperend of a spring 48 whose lower end is connected to a projection 49 onthe lower portion of the arm.37. The spring 48 tends to draw the leverarm 35 and its fulcrum 36 toward the eccentric 38 and thereby tends toraise the lever arm 34 which is pivoted to the lever 35 forwardly of itsfulcrum 36, for a purpose hereinafter explained.

From the construction just described, it will be understood that whenthe driving member 39 is rotated upon the shaft 40 the eccentric 38 willraise and lower the arm 37 and lever 35 and thereby rock the lever 30and reciprocate the block 28 and staple driver 27.

Mounted to turn loosely on the shaft 40 between the driving member 39and a collar 51, fixed on the outer end of the shaft, is a pulley 52which is adapted to be constantly driven in the direction of the arrowin Fig. 1 from any suitable source of power. The inner end of the pulleyhub 53 has circular cavity 54 formed therein into which one end of thedriving member 39 extends. The pulley hub 53 is adapted to rotate aroundthe end of the driving member 39, and the hub 53 has a series of spacedoutwardly-extending notches 55 which interrupt the circular Wall of thecavity 54. The notches 55 are adapted to be entered by the free end of adog 56 which is pivoted, at 57, to the driving member 39 and which isfitted to a slot 60 in the member 39 to move inwardly and outwardly onits pivot 57. Arranged within an opening in the dog 56 is a spring 61which presses against the member 39 and dog 56 and tends to force thefree end of the dog outwardly. Normally the dog 56 is held in itsinnermost position, as shown in the drawings, against the spring 61 by acam 62 formed on a controlling part 63 which is pivoted, at 64, to thestandard 2. Vi" hen the part 63 is rocked on its pivot 64 in thedirection of the arrow in Fig. 4, to move the cam 62 from beneath thedog 56, the dog 56 will be freed and forced by the spring 61 against thecircular wall of the cavity 54; and, thereafter, the dog 56 will beforced by the spring 61 into the first notch 55 of the constantlyrotating pulley 52 which passes it. Immediately upon the entrance of thedog 56 into the notch 55, the driving member 39 will start to rotatewith the pulley 52 and will continue to rotate therewith until thecontrolling part 63 is returned to the position shown in Fig. 4, as willbe hereinafter explained. The driving member 39 has an outwardlyextending ring or flange 6 formed thereon and cut away to form ashoulder 66to be engaged by a projection 67 on the controlling part 63to stop the rotation of the driving member 39 when the controlling part63 is returned to its normal position. The controlling part 63 has anarm 68 formed thereon which is adapted to engage a lug 69 projectingfrom the standard 2 to stop the further movement of the part 63 after ithas been moved in the direction of the arrow sufiiciently to cause thecam 62 and projection 67 to clear the dog 56 and tooth 66, respectively,and thereby permit the driving member 39 to be rotated by and with thepulley 52. When the controlling part 63 is moved to permit thisoperation the projection 67 clears the shoulder 66 before the cam 62clears the dog 56 and permits the dog to enter a notch 55 in the pulleyhub 53, so that the driving member 39 will be free to rotate immediatelythe dog enters a notch 55.

To prevent the driving member 39 from being turned backward, I provideit with an opening or cavity 70 having a dog 71 slidably fitted therein.The dog 71 and the adjacent wall of the opening 70 are made square incross section to prevent the dog from turning; and the dog is providedwlth an inwardly projecting pin 72 which is encircled by a sprin 73which presses the dog 71 against the frame boss 41. The outer end of thedog 71 is beveled as shown and enters a similarly shaped notch 74 in theframe boss all after each revolution of the driving member 39 andthereby prevents backward turning thereof. lVhen the driving membe 39 isturned forwardly by the pulley 52, the dog 71 is forced by its beveledend out of the notch 74 against the action of the spring 73.

The pivoted member 9 is adapted to be lowered toward the anvil 22, andthe controlling part 63 is adapted to be moved in the direction of thearrow to start the actuation of the driving member 39 by operating alink ?5 which is pivoted, at one end at 76, to the controlling part 63and which extends forwardly therefrom. The forward end of the link 75 ispivoted, at 77, to the lower portion of a link 78 whose upper end ispivoted, at 80, to the member 9. The link 78 extends downwardly from itspivoted connection with the link 7 5 and into a guiding slot in a lug 81on the standard 2. The link 75 is held normally elevated in the positionshown in the drawings by a spring 82 the lower end of which is connectedthereto and the upper end of which is connected to a lug on the standard2. In holding the link 75 up in the position illustrated, the spring 82holds the pivoted member 9 elevated and holds the controlling part 63 inposition to prevent the rotation of the driving member 39 by the pulley52. The link 7 5 is adapted to be depressed by a suitable foot pedal,not shown, connected to a bar 83 whose upper end is pivoted to the link7 5. The relation of the connections just described is such that whenthe bar 83 is moved downwardly, the first operation effected thereby'will be to rock the link 75 on its pivot 76, without moving thecontrolling part until the link 75 pulls the pivoted member 9 down toengage its projection 21 with the work upon the anvil 22 to be stapledand thereby stop further downward movement of the member 9. When thedownward movement of the member 9 is thus stopped the further downwardmovement of the bar 83 will rock the link 75 on its pivot '77 and movethe controlling part 63 in the direction of the arrow until it engagesthe stop lug 69 and prevents further downward movement of the bar 83 andreleases the driving mem- 361' 39 and permits the dog 56 to enter anotch 55 of the driving pulley 52 to start the rotation of the drivingmember 89 by and with the pulley 52. If the bar 83 be depressed toeffect the operations just described and released immediately after themember 39 starts to rotate, the spring 82 will return the controllingpart to normal position and the controlling part will stop the rotationof the driving member 39 after the pulley 52 turns it acompleterevolution.

Slidably fitted within an opening in the lever arm 29 is a pin 84Chaving a head 85 on the lower end thereof; and encircling the pin Betand housed within a cavity in the lever arm 29 is a spring 86 which actsbetween the head 85 and the top wall of the cavity to force the pin 8%downwardly. The downward movement of the pin 8% is stopped by a nut 8'?which is screwed on to the upper end of the pin 84 and engages the topof the lever arm The head 85 is arranged directly over an upwardlyextending projection 89 on the pivot-ed arm 9 whereby when the lever arm29 is lowcred, the head will engage the projec tion 87 and force it andthe pivoted member 9 downwardly with a yielding pressure, for a purposehereinafter explained. By adjusting the nut 87 the head 85 may beadjusted toward or from the projection 87, as desired. A look nut 88 isprovided on the upper end of the pin 84 to be screwed against the nut 87to lock it in place after adjustment.

The staple setting anvil 22 has a round pin like extension 90 formedthereon which enters a similarly shaped opening in the bracket 23 andwhich is firmly held therein by a set screw 91 screwed into the bracket2% and engaging the extension 90. This construction provides a veryconvenient means for adjustably securing the anvil 22 to the bracket Byloosening the screw 91 the extension 90 may be moved longitudinallywithin its opening in the bracket to adjust the anvil 22 laterally with'es 'iert to the staple driver 27 and staple guiding channel 19; and byrocking the anvil 22 on the axis of the-extension 90 the grooved top ofthe anvil may be adjusted forward and back with respect to the stapledriver the spring 16. The pulley 52 is driven constantly from a suitablesource of power and the parts of the machine rest normally in theposition shown in the drawings while the pulley 52 rotates idly on theshaft 410. The work to be stapled is placed upon the anvil 22 and thebar 83 is depressed against the action of the spring 82 by the aid of afoot pedal or other suitable device, and immediately after thedepression thereof it is released. During the initial downward movementof the bar 83 it rocks the link 75 on its pivot 76 and thereby causesthe link 75 to pull the pivoted member 9 down until its staple guidingprojection 21 rests upon the work placed upon the anvil 22 and preventsfurther downward movement of the member 9. The engagement of theprojection 21 with thework also prevents further downward movement ofthe pivoted end 77 of the link 7 5; and, therefore, the continueddownward movement of the bar 83 causes it to pull the pivoted end 76 ofthe link 7 5 downwardly and thereby rock the controlling member 63 onits pivot 64 in the direction of the arrow in Fig. 4 until it engagesthe stop lug 69 and prevents further downward movement of the bar 83.When the controlling part 63 is thus moved its arm 67 is first movedoutwardly to clear the shoulder 66 to unlock or release the member 39;and, immediately thereafter the cam 62 clears the dog 56 and it entersone of the notches 55 in the hub of the rotating pulley 52, connectingthe driving member 39 thereto and causing it to turn therewith. As thedog 56 enters a notch in the pulley 52 almost immediately upon beingreleased by the cam 62, the bar 83 may be released practicallyimmediately after it has been depressed sufficiently far to bring thecontrolling part 63 into engagement with the stop lug 69. As soon as thedriving member 39 starts to turn with the pulley 52 and the bar 83 isreleased, the spring 82 in tending to raise the link 7 5 pulls the arm67 into engagement with the periphery of the flange 65 of the member 39and prevents the return of the controlling part 63 to its normalposition until the driving member 39 makes a complete revolution,whereupon the spring 82 pulls the part 63 back to normal position andcauses the arm 67 to engage the shoulder 66 and prevent further turningofthe driving member 39 just as the dog 56 is moved by the cam 62 fromengagement with a notch 55 in the driving pulley 52. It willbe observedthat when the driving member 39 is at rest, the position of itseccentric 38 is such that the staple driver 27 is about midway of itsstroke, crossing the feed line of the row of staples 13 in the magazine10, and that a staple 13 is in the channel 19 beneath the driver 27 thestaple 13 having been moved there from the row 13 by the driver 27during its downward movement just before the completion of the turningof the driving member 39 of its last previous revolution. Now, when thedriving member 39 turns a revolution, as above described, the eccentric38, through the arm 37 and levers 35 and 30, depresses the staple driver27 from the position illustrated, as the high part of the eccentric 38passes over the shaft a0, then raises the staple driver to its highestposition above that illustrated, as the high part of the eccentric 38moves down to a position beneath the shaft 40, and then depresses thestaple driver 27 to the position illustrated, as the eccentric 38 comesto rest with the driving member 39. During the downward movement of thestaple driver 27 from the position illustrated, it drives the staple 13down through the channel 19 and through the work upon the anvil 22 andinto engagement with the anvil causing it to turn the staple prongsinwardly and clench the same. During the reverse or upward movement ofthe staple driver 27 to its highest point, its lower end passes the topof the rowof staples 13 in the staple magazine 10, permitting the spring16 to feed the'foremost staple of the row 13 up against the wall 14 andbeneath the bottom of the driver 27, so that whenthe driver 27 is moveddown to the position illustrated it will move the foremost staple of therow 13 down to the position previously occupied by the staple 13 for asucceeding stapling operation. It will thus be seen that a staple willbe set in work placed upon the anvil 22 each time the bar 83 isdepressed to permit the driving member 39 to turn a complete revolution.During the setting of a staple, the downward movement of the stapledriver 27 to effect the same is arrested when the top bar of the stapleconnecting its prongs engages the top of the work placed upon the anvil22, and this takes place before the high part of the eccentric 38reaches a position directly over the shaft 40 and before the eccentricarm 37 com pletes its upward movement. It will be understood, therefore,that as the arm 37 completes its upward movement it will raise thefulcrum 36 of the lever 35 while the staple driver 27 and its actuatinglever 30 are thus arrested, causing the lever 35 to rock on its fulcrum36 against the action of the spring 48 in a manner to cause the stapleto be set by a yielding pressure and to compensate for varyingthicknesses within limits in the work placed upon the anvil. To obtainthe best results, the pull of the spring d8 upon the lever 35 should bevaried when the thickness of the work varies to any appreciable extent,and also staples having prongs of varying lengths should be used, forgreatly varying thicknesses of work; the length of the prongs beingconsistent with the thickness of the work to provide the proper lengtho1 prongs which penetrate below the work for clenching and the pull ofthe spring 48 for stapling thick work being greater than for staplingthin or delicate work, so that the stapling pressure against the driver2? will not yield before the thick work has been properly penetrated bythe staple, and so that the yielding pressure of the staple driver willnot be too great for thin or delicate work.

This desired ieldin aressure or pull or the spring l8 may be varied orregulated by -moving the spring connecting member -7 toward and from thelever fulcrum 36, as previously explained.

/V hen the lever arm 29 is moved down to operate the staple driver 2'?to set a staple, the head 85 of the spring pressed pin 8% engages theprojection on the pivoted memher 9 and holds the projection 21 of themember 9 down upon the work being stapled with a yielding pressure.

are? the bar 83 has been depressed and released to eii ect a staplingoperation, as previously described, the spring 82 does not raise thepivoted member 9 to the position illustrated until the staple has beenset in the work and the lever arm 29 is raised to elevate the stapledriver 27 due to the friction between the staple drivingand the parts ofthe member 9 which guide them. After the staple has been set, thepivoted member 9 rises to the position illustrated with the lever arm 29when it elevates the staple driver 2'? within the pivoted member 9, theupward movement of the staple driver 2'? within the member 9 causing itwith the aid of the spring 82 to the member 9.

I claim as my invention:

1, in a staple setting machine, the combination of a supporting "frame,a staple setting anvil, staple supplying and guiding means, a stapledriver adapted to coiiperate with said anvil to set staple, a movableactuating part connected to said driver, a rotatable driving member, aneccentric carried by said member, an arm operatively connected to theeccentric, a lever tulcrumed on said arm and connected on one side ofits fulcrum to said actuating part, and a spring acting between a partof the machine and said lever on the other side of its fulcrum to moveit toward the eccentric, whereby when the driving member is rotated thestaple driverwill be actuated by a yielding pressure.

2. In a staple setting machine, the combi nation oi: a supporting frame,a staple setting anvil, staple supplying and guiding cans, a stapledriver adapted to cooperate with said anvil to set a staple, a movableactuating part connected to said driver, a rotatable driving member, aneccentric carried by said member, an arm bperatively connected totheeccentric, a lever fulcrumed on said arm and connected on one side ofits fulcrum to said actuating part, and a spring acting between said armand said lever on the other side of its fulcrum to move it to ward theeccentric, whereby when the driving member is rotated the staple driverwill be actuated by a yielding pressure.

3. In a staple setting machine, the combination of a supporting frame, astaple setting anvil, staple supplying and guiding means, a-stapledriver adapted-to coiiperate with said anvil to set a staple, anactuating lever fulcrumed on a part oi the machine and having one armoperatively connected to said driver, a rotatable driving member, aneccentric carried by said member, an arm operatively connected to theeccentric,

lever fulcrumed on said arm and connected on one side of its fulcrum tothe other arm of said actuating lever, and spring acting between a partof th machine and the second named lever on the other side of itsfulcrum to move it toward the eccentric, whereby when the driving memberis rotated the staple driver will be actuated by a yielding pressure.

4 In a staple setting machine, the combination of a supporting frame, astaple set ting anvil, staple supplying and guiding means, a stapledriver adapted to cooperate with said anvil to set a staple, anactuating lever fulcrumed on a part of the machine and having one armoperati ely connected to said driver, a rotatable driving member, aneccentric carried by said member, an arm operatively connected to theeccentric, a lever tulcrumed on said arm and connected on one side ofits fulcrum to the other arm of said actuating lever, anda, springacting between said arm and the second named lever onthe other side ofIt's fulcrum to move it toward the eccentric, whereby when the drivingmember is rota d the staple driver will be actuated by a yieldingpressure.

5. In a staple setting machine, the, combination of a supporting frame,a staple se ting anvil, staple siupplyina and guiding means, a stapledriver adapted to coiiperate with said anvil to set a staple, a movableactuating part connected to said driver, a driving member operative tomove said part,

lever tulcrumed on said member and connected on one side of its fulcrumto said actuating part, a spring acting betweena part of the machine andsaid lever on the other side of its fulcrum and causing said member tomove said part by a yielding pressure, and adjustable means to vary thepressure of said spring against said part.

6. In a staple setting machine, the combination of a supporting frame, astaple setting anvil, staple supplying and guiding means, a stapledriver adapted to cooperate with said anvil to set a staple, a movableactuating part connected to said driver, a rotatable driving member, aneccentric carried by said member, an arm operatively connected to theeccentric, a lever fulcrumed on said arm and connected on one side ofits fulcrum to said actuating part, a spring acting between a part ofthe machine and said lever on the other side of its fulcrum to move ittoward the eccentric, whereby when the driving member is rotated thestaple driver will be actuated by a yielding pressure, and adjustablemeans to vary the pressure of said spring against said part.

7. In a staple setting machine, the combination of a supporting frame, astaple setting anvil, staple supplying and guiding means. a stapledriver adapted to coiiperate with said anvil to set a staple, a movableactuating part connected to said driver, a ro atable driving member, aneccentric carried by said member, an arm operatively con nected to theeccentric, a lever fulcrumed on s id arm and connected on one side ofits fulcrum to said actuating part, a spring acting between said arm andsaid lever on the other side of its fulcrum to move it toward theeccentric, whereby when the driving member is rotated he staple driverwill be actuated by a yielding pressure, and adjustable means to varythe pressure of said spring against said part.

8. In a staple sett ng machine, the comb nation of su porting frame, astable setting anvil. staple suppl ing and guiding m ans, a stapledriver adapted to cooperate with said anvil to set a staple, anactuating lever fulciauned on a part of the machine and having one armoperativelv connected to said driver, a rotatable driving member, aneccentric carried by said memher. an arm operatively connected to theeccentri a lever fulcrumed on said arm and connected on one side of itsfulcrum to the ther arm of said actuating lever, a spring acting betweena part of the machine and the second named lever on the other side ofits fulcrum to move it toward the eccentric,

whereby when the driving member is rotated the staple driver will beactuated by a yielding pressure, and adjustable means to vary thepressure of said spring against said actuating lever,

9. in a staple setting machine, the comblnation of supporting frame, astaple setting anvil, staple supplying and guiding means, a stapledriver adapted to cooperate with said anvil to set a staple, a movableactuating part connected to said driver, a reciprocable element, a leverfulcrumed on said element and connected on one side of its furcrum tosaid actuating part, aspring having one end connected to said element,and means to connect the other end of said spring to said lever on theother side of its fulcrum at different distances therefrom to vary thepressure of the spring against said actuating part, whereby when saidelement is reciprocated the staple driver will be actuated by a yieldingpressure and whereby the yielding pressure may be regulated by adjustingthe spring connecting means toward and from the fulcrum of the lever.

10. In a staple setting machine, the combination of a supporting frame astaple setting anvil supported by the frame, a men ber having a stapleguiding channel pivoted on the frame to move toward and from the anvil,a staple driver guided in said member and adapted to cooperate with saidanvil to set a staple, a link pivoted on the frame in dependently of thepivotal bearing of said staple guiding member, and movable relaivelythereto, an actuating lever fulcrumed on said pivoted link and connectedto the staple driver to move the same relatively to said member to set astaple when the lever is actuated, means operative to move'said membertoward and from the anvil, and means operative to actuate the lever,

11. In a staple setting machine, the com bination of a supporting framea staple setanvil supported by tie frame, a memr pivoted on the frame tomove toward and from the anvil and provided with staple guiding means, astaple driver guided in said member and adapted to cooperate with saidanvil to set a staple, a link pivoted on the frame, an actuating leverfulcrumed on said link and connected to the staple driver to move thesame relatively to said member to set a staple when the lever isactuated, means operative to move said member to ward and from theanvil, a rotatable driving member, an eccentric carried by the drivingmember, and connecting actuating means between the eccentric and thelever.

12. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to coiiperatewith said anvil to set a staple, a linlc pivoted on the frame, anactuating lever fulcrumed on said link and connected to the stapledriver means operative to move said member toa dating ward and from theanvil, a rotatable driving member, an eccentric carried by the drivingmember, an arm operatively connected to the eccentric,alever fulcrumedon said arm and connected on one side of its fulcrum to said actuatinglever, and a spring acting between said arm and the second named leveron the other side of its fulcrum to move it toward the eccentric,whereby when the driving member is rotated the staple driver will beactuated by a yielding pressure.

13. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to coiiperatewith said anvil to set a staple, a link pivoted on the frame, anactuating lever fulcrumed on said link and connected to the stapledriver to move the same relatively to said member to set a staple whenthe lever is actuated, means operative to move said member toward andfrom the anvil, rotatable driving member, an eccentric carried by thedrivmember, an arm operatively connected to the eccentric, a leverfulcrumed on said arm and connected on one side of its fulcrum to saidactuating lever, and means to connect the other end of said spring tothe second named lever on the other side of its fulcrum at differentdistances therefrom to vary the pressure of the spring against saidactuating lever, whereby when the driving member is rotated the stapledriver will be actuated by a yielding pressure and whereby theyieldpressure may be regulated by adjusting the spring connecting meanstoward and from the fulcrum of the second named lever.

14-. In a staple setting machine, the combination of a suppoi bll'lgframe, a staple setting anvil supported by the frame, a mem ber pivotedon the frame to move toward and from the anvil and provided with stapleguiding means, a staple driver guided in said meml adapted to cooperatewith said i to set a. staple, a driving member, means the drivingmember, connecting acns between the driving member and the stapledriver, and additional means operative to move the pivoted stapleguiding member toward and from the anvil and to start and stop theoperation of the means actuating the driving member.

ln staple setting machine. the combination of a supporting frame, a stale sett n anvil supported by the frame, a mempivoted on the frame tomove toward and Tom the anvil and provided with staple .iding means, astaple driver guided in said member and adapted to cooperate with saidanvil to set a staple, a controlling part pivoted to the frame, a linkhaving one end pivoted to said part, a second link pivotally connectedto the other end of the first named link and to said member, means operative to move the first named link and thereby move said member towardsaid vil and thereafter move said part, and means controlled by saidpart when moved to actuate the staple driver.

16. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cot peratewith said anvil to set a staple, a controlling part pivoted to theframe, a link having one end pivoted to said part, a second. linkpivotally connected to the other end of the first named link and to saidmember, means operative to move the first named link from its normalposition and thereby move said member toward said anvil and thereaftermove said part, means controlled by said part when moved to actuate thestaple driver, and a spring to return the first named link to normalposition.

17. In a staple setting machine, the com bination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guidd in said member and adapted to cooperatewith said anvil to set a staple, a controlling part pivoted to theframe, a link having one end pivoted to said part, a second linkpivotally connected to the other end of the first named link and to saidmember, a bar pivoted to the first named link between its pivoted endsand operative to move the same from its normal position and thereby movesaid member toward said anvil and tiereafter move said part, meanscontrolled by said part when moved to actuate the staple driver, and aspring having one end connected to said frame and the other endconnected to the first named link between its pivoted. en to return itto normal osition.

18. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the rrame, a member pivoted on theframe move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to coeperate5th said anvil to set a staple, a movable controllingpart, meansoperative to move said member toward the anvil and thereafter move saidpart, a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said part when moved. to start and stop the rotation ofthe driving memher, and connecting actuating means between the driving mmber and the staple driver.

19. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a mem ber pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cooperatewith said anvil to set a staple, a movable controlling part, meansoperative to move said member toward the anvil and thereafter move saidpart, a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said part when moved to start and stop the rotation of thedriving member, an eccentric carried by the driving member, an armoperatively connected to the eccentric, and connecting actuating meansbetween said arm and the staple driver.

20. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a

member pivoted on the frame to move to-' ward and from the anvil andprovided with staple guiding means, a staple driver guided in saidmember and adapted to cooperate with said anvil to set a staple, amovable controlling part, means operative to move said member toward theanvil and thereafter move said part, a shaft, a driving member looselymounted on .said shaft, means controlled by said part when moved tostart and stop the rotation of the driving member, an eccentric carriedby the driving member, an arm operatively connected to the eccentric, alever fulcrumed on said arm, a spring acting between a part of themachine and said lever on one side of its fulcrumto move it toward theeccentric, and connecting actuating means between said lever on theother side of its fulcrum and the staple driver, whereby when theeccentrio is rotated the staple driver will be actuated by a yieldingpressure.

21. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cooperatewith said anvil to set a staple, a movable controlling part; meansoperative to move said member toward the anvil and thereafter move saidpart, a shaft, a driving member loosely. mounted on said shaft, meanscontrolled by said part when moved to start and stop the rotation of thedriving member, an eccentric carried by the driving member, an armoperatively connected to the eccentric, a lever fulcrumed on said arm, aspring acting between a part of the machine and said lever on one. sideof its fulcrum to move it toward the eccentric, and a lever fulcrumed onthe machine and connected to the first named lever on the other side ofits fulcrum and operatively connected to the staple driver, whereby whenthe eccentric is rotated the staple driver will be actuated by ayielding pressure.

22. In a staple setting machine, the corn bination of a supportingframe, a staple setting anvil supported by the frame, a member pivotedon the frame to move toward and from the anvil and provided with stapleguiding means, a staple driver guided in said member and adapted tocooperate with said anvil to set a staple, a movable controlling part,means operative to move said member toward the anvil and thereafter movesaid part, a shaft, a driving member loosely mounted on said shaft,means controlled by said part when moved to start and stop the rotationof the driving member, an eccentric carried by the driving member, anarm operatively connected to the eccentric, a lever fulcrumed on saidarm, a spring, acting between a part of the machine and said lever onone side of its fulcrum to move it toward the eccentric, a link pivotedon the frame, and a lever fulcrumed on the link and connected to thefirst named lever on the other side of its fulcrum and operativelyconnected to the staple driver, whereby when the eccentric is rotatedthe staple driver will be actuated by a yielding pressure.

23. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cooperatewith said anvil to set a staple, a movable controlling part, meansoperative to move said member toward the anvil and thereafter move saidpart, a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said part when moved to start and stop the rotation of thedriving member, an eccentric carried by the driving member, an armoperatively connected to the eccentric, and a lever fulcrumed on themachine and operatively connecting said arm and the staple driver.

24. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cooperatewith said anvil to set a staple, a movable controlling part, meansoperative to move said member toward the anvil and thereafter move saidpart, a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said part when moved to start and stop the rotation of thedriving member, an eccentric carried by the driving member, an armoperatively connected to the eccentric, a link pivoted on the frame, anda lever fulcrumed on the link and operatively connecting said arm andthe staple driver.

25. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward'and-from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cooperatewith said anvil to set a staple, a controlling part pivoted to theframe, a link having one end pivoted-to said part, a second linkpivotally connected tothe other end of the first named link and to saidmember, a bar pivoted to the firstnamed link between its pivoted endsand operative to move the same from its normal position and therebymovesaid member toward said anvil and thereafter move saidpart, a springhaving one end connected to said frame andthe other end connected to thefirst named link between its pivoted ends to return it to normalposition, a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said part when moved tostart and stop the rotation of thedriving member, an eccentric carried by the driving member, an armoperatively connected to the eccentric, and connecting actuating meansbetween said arm and the staple driver.

26. In a staplesetting machine, the combination of a supporting frame, astaple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adaptedto cooperatewith said anvil to set a staple,a controlling part pivoted to the frame,a link having one end pivoted to said part, a second link pivotallyconnected to the other end of the first named link and tosaid member, abar pivoted to the first named link between its pivoted ends andoperative to move the same from its normal position andthereby movesaidmember toward said anvil and thereafter move said part, a springhavingone end connected to said frameand the other endconnected to thefirst named link betweenits pivoted ends to return it to normalposition, .a shaft, a driving member loosely mounted on said shaft,means controlled by said part when movedto start and stop the-rotationof the drivingmember, an eccentric carried by the driving member, anarm'operatively connected to the eccentric, a lever fulcrumed on saidarm, a spring acting between a part of the machine and said lever on oneside of its fulcrum to move it toward the eccentric, and connectingactuating means between said lever on the other side of its fulcrum andthe staple driver, whereby when the eccentric is rotated the stapledriver will be actuated by a yielding pressure.

27. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil. and provided with stapleguiding means, a staple driver guided in said member and adapted tocooperate with said anvil to set a staple, a controlling part pivoted tothe frame, a link having one end pivoted to said part, a second linkpivotally connected to the other end of the first named-link and to saidmember, a bar pivoted to the first named link between its pivoted endsand operative to move the same from its normal position and thereby movesaid member toward said anvil and thereafter move said part, a springhaving one end connected to said frame and the other end connected tothe first named link be tween its pivoted ends to return itto normalposition. a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said part when moved to start and stop the rotation of thedriving member, an eccentric carried by the driving member, an armoperatively connected to the eccentric, a lever fulcrumed on said arm, aspring acting between a part of the machine and said lever on one sideof its fulcrum to move it toward the eccentric, and a lever fulcrumed onthe machine and connected to the first named lever on the other side ofits fulcrum and operatively connected to the staple driver, whereby whenthe eccentric is rotated the staple driver will be actuatedby a yieldingpressure.

28. In a staple setting machine, the combination of a supporting frame,a staple setting anvilsupportedby the frame, a member pivotedon theframe tomove toward and from the anvil and provided with staple guidingmeans, a staple driver guided'in said member and adapted to cooperatew-ith'said anviltoset a staple, a controlling part pivoted to the frame,a link having one end pivoted to said part, a secondlink pivotallyconnected to the other end of the first'named link and to said member,a'bar pivoted to the first named link between its pivoted ends andoperative to move the same from its normal position and thereby movesaidmember toward said anvil and thereafter move said part, a springhaving one end connected to said frame and the other end connected tothe first named link between its pivoted ends to return it to normalposition, a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said partwhen moved to start and stop the rotation of thedriving member, an arm operatively' connected to the eccentric, a leverfulcrumed on said arm, a spring acting between a part of the machine andsaid lever on' one side of its fulcrum to move it toward the eccentric,a link pivoted on the frame, and a lever fulcrumed on the link andconnected to the first named lever on the other side of its fulcrum andoperatively connected to the staple driver, whereby when the eccentricis rotated the staple driver will be actuated by a yielding pressure.

29. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cooperatewith said anvil to set a staple, a controlling part pivoted to theframe, a link having one end pivoted to said part, a second linkpivotally connected to the other end of the first named link and to saidmember, a bar pivoted to the first named link between its piv oted endsand operative to move the same from its normal position and thereby movesaid member toward said anvil and thereafter move said part, a springhaving one end connected to said frame and the other end connectedto thefirst named link between its pivoted ends to return it to normalposition, a shaft, a driving member loosely mounted 011 said shaft,means controlled by said part when moved to start and stop the rotationof the driving member, an eccentric carried by the driving member, anarm operatively connected to the eccentric, and a lever fulcrumed on themachine and operatively connecting said arm and the staple driver.

30. In a staple setting machine, the combination of a supporting frame,a staple setting anvil supported by the frame, a member pivoted on theframe to move toward and from the anvil and provided with staple guidingmeans, a staple driver guided in said member and adapted to cooperatewith said anvil to set a staple, a controlling part pivoted to theframe, a link having one end pivoted to said part, a second linkpivotally connected to the other end of the first named link and to saidmember, a bar pivoted to the first named link between its pivoted endsand operative to move the same from its normal position and thereby movesaid member toward said anvil and thereafter move said part, a springhaving one end connected to said frame and the other end connected tothe first named link between its pivoted ends to return it to normalvposition, a shaft, a driving member loosely mounted on said shaft, meanscontrolled by said part when moved to start and stop the rotation of thedriving member, an eccentric carried by the driving member, an armoperatively connected to the eccentric, a link pivoted on the frame, anda lever fulcrumed on the link and operatively connecting said arm andthe staple driver.

31. In a staple setting machine, the combination of a supporting frame,a staple setting anvil, staple supplying and guiding means, a stapledriver adapted to cooperate with said anvil to set a staple, a shaft, arotatable driving part carried .by the shaft and adapted to beconstantly driven, a driving member loosely mounted on the shaft, acontrolling part mounted on the frame and movable from and to a normalposition, a link pivoted to said controlling part, means adapted to actupon said link to move the controlling member from and to its normalposition, means operated by the controlling member when moved fromnormal position to start the actuation of the driving member by saiddriving part, means operated by the controlling member when returned tonormal position to stop the actuation of the driving member after itreaches a predetermined position, and connecting actuating means betweenthe driving member and the staple driver.

32. In a staple setting machine, the combination of a supporting frame,a staple setting anvil, staple supplying and guiding means, a stapledriver adapted to cooperate with said anvil to set a staple, a shaft, arotatable driving part carried by the shaft and adapted to be constantlydriven, a driving member loosely mounted on the shaft, a controllingpart mounted on the frame and movable from and to a normal position, alink pivoted to said controlling part, means adapted to act upon saidlink to move the controlling member from and to its normal position,means operated by the controlling member when moved from normal positionto start the actuation of the driving member by said driving part, saidcontrolling member having a part adapted to engage a part of the drivingmember to stop the rotation thereof when the controlling member isreturned to normal position, and connecting actuating means between thedriving member and the staple driver.

33. In a staple setting machine, the combination of a supporting frame,staple guiding means, a staple driver, a staple setting anvil having around part projecting therefrom and into a round opening in the frame atan angle relatively to the plane of the staple driver, said anvil beingadjustable about the axis of said part to set the anvil in operativerelation to the staple driver, and means to secure said part in adjustedposition.

34. In a staple setting machine, the combination of a supporting frame,staple In testimony whereof, I have hereunto afguiding means, a stapledriver, a staple setfixed my signature this 31st day of October, tinganvil having a round part extending A. D, 1919. therefrom and into anopening in the frame 0 at an angle relatively to the plane of the ELWOOD H. MICHENER.

staple driver, said part being adjustable both longitudinally and aboutits axis to set lVitnesses: the anvil in required adjusted relation toI. M. TUNIs the staple driver, and means to secure said ALEXANDER iPARK.

10 part in adjusted position.

